Use constexpr where applicable in api/direct_bt

Note that C++17 constexpr implies inline, if a function or static method.

In this regard, const expressions can be resolved at compile time and therefor
gurantee actual inlining.

1 files changed, 1 insertions, 1 deletions

diff --git a/api/direct_bt/GATTHandler.hpp b/api/direct_bt/GATTHandler.hpp
index 346d4153..b9c76d86 100644
--- a/api/direct_bt/GATTHandler.hpp
+++ b/api/direct_bt/GATTHandler.hpp
@@ -145,7 +145,7 @@ namespace direct_bt {
                 /* BT Core Spec v5.2: Vol 3, Part G GATT: 5.2.1 ATT_MTU */
                 MIN_ATT_MTU = 23
             };
-            static inline int number(const Defaults d) { return static_cast<int>(d); }
+            static constexpr int number(const Defaults d) { return static_cast<int>(d); }
 
        private:
             const GATTEnv & env;